IS022 3/20/2014 Access Methods of Secondary Storage Devices Secondary Storage Device is storage medium which is used to store large amount of data permanently until it is changed by user. Though it stores information‚ it cannot be accessed directly by the CPU. The data stored in Secondary Storage Device can be accessed depending upon how it is stored on the device. Mainly there are two methods of accessing data from the Secondary Storage Device. 1) Sequential Access Method 2) Direct Access Method
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Components of a Computer System A computer system consists of both hardware and information stored on hardware. Information stored on computer hardware is often called software. The hardware components of a computer system are the electronic and mechanical parts. The software components of a computer system are the data and the computer programs. The major hardware components of a computer system are: Input devices: Keyboard‚ mouse‚ scanner‚ digital camera and joystick. Peripheral device used to provide
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Computer Architecture 1. Describe Von Neumann architecture and explain why it is important. The Von Neumann architecture explains the architecture of an electronic computer. It is attributed to be root of every electronic computer that has ever been made. According to Von Neumann architecture an electronic computer has Control Unit‚ Arithmetic Logic Unit‚ Memory & Input / Output Devices. The following diagram shows this architecture:- Memory: - Memory holds both
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Mobile Computing and Devices Arlett Garvin Computer Literacy 103 Instructor LaMeika Gupton September 6‚ 2012 Mobile Computing and Devices The term Mobile Computing is the use of computing devices while in transit. Mobile Computing is both old and new. This research paper will provide history and a brief source of the origins of mobile computing. This paper will also cover various types of devices used to process and transmit information from remote locations to other remote
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future is the thing that takes a lot of our time and efforts being computer oriented. We have to imagine‚ try to figure out what the future will bring us. We are supposed to lead our generation in looking for new and life enhancing technologies to make man ’s life easier and more enjoyable. How will it look like? [pic]THIS IS THE MOST IMPORTANT QUESTION THAT CAME TO OUR MINDS. • Will we be able to talk to our computers in the future? • Will they respond freely? • Can they understand
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developing that resulted into many devices that helped us a lot. Computers became essential part of our lives. Technically speaking‚ the computer is any counting device. But in the context of modern technology‚ we will define the computer as an electronic device capable of interpreting and executing programmed commands for input‚ output‚ computation‚ and logic operations. Computer habits could be categorized on how many hours you spent in computer‚ purpose of using computer‚ and what application you commonly
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Tomorrow’s Technology and You textbook. Chapter 1 1. What is the most important difference between a computer and a calculator? [RQ‚ no. 2] Calculators perform operations one at a time‚ while computers can process a sequence of operations using provided instructions. A typical calculator requires many interactions to perform a computation‚ while a computer takes a set of instructions. 2. How are computers today similar to those from World War II? How are they different? [RQ‚ no. 3] 3. The way people
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set reminders * Use the built-in calculator for simple math * Send or receive e-mail * Get information (news‚ entertainment‚ stock quotes) from the Internet * Play games * Watch TV * Send text messages * Integrate other devices such as PDAs‚ MP3 players and GPS receivers ADVANTAGES: * Makes communication much easier * It is much more portable than the telephone DISADVANTAGES: * Students nowadays‚ spend much more time in communicating with their friends rather
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Computer Networks Does anyone really know what networking is? “In the world of computers‚ networking is the practice of linking two or more computing devices together for the purpose of sharing data” (Networking Fundamentals). Now this is a great explanation but does this really help us understand? Networking has grown over many years. Where did networking come from? Lets go back to the beginning and find out how far we have come. Network research can be traced back to around the 1960’s.
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Selected objective question on Introduction to Computers with answer :Set 4 1. How many input lines are needed to construct 1024 bit coincident core plane? (a) 8 (b) 16 (c) 32 (d) 64 (e) None of the above. ANS: d 2. A digital computer is based on the principle of (a) measurement 1 / 23 Selected objective question on Introduction to Computers with answer :Set 4 (b) logic (c) multiplication (d) counting ANS: d 3. How many types of storage loops exist
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